Elevator



3 Sheets-Sheet 1.

R.T. GRANE.

ELBVAZIJOR.

No. 245,061. Patented Au'g. 2,1881.

Wil a? ess'eflg Invenior:

( u/a/m J 61 M N. PETERS. PhulwLilhogmphar, Washington. n.0,

3 Sheets8heet 2. R. T. CRANE.

. ELEVATOR.

No. 245,061. 4 Patented Aug. 2,1881.

Ti f-Z. fly. 3.

FILL 11005505: fnvenior;

W- Jame/hob 16km, fly W: @Mfind 1 3 SheetsSheet 3. V R..T. CRANE.

Y ELEVATOR.

No. 245,0 1, A Patented Aug. 2,1881

y Way.

N. PETERs Phnln-Liihnsmplsen Washington, D. c.

V To all whom it mayfconcarn:

A UNITED STATES PATENT OFFICE.

RIOHABD T. CRANE, OF CHICAGO, ILLINOIS.

ELEVATOR.

SPECIFICATION forming .part of Letters Patent No. 245,061, dated August2, 1881.

Application filed November 7, 1879.

- Be it known that'I, RIoHARnT. ORANE,-lesiding at Chicago, in thecounty of Cook and State of Illinois, and a citizen of the'UnitedStates, have invented new and useful Improve ments in Elevators, ofwhich the following'is a full description, reference being had to theaccompanying drawings, in which- Figure 1 is a side elevation. Fig. 2 isa front elevation; Fig. 3, a rear elevation of the parts represented.'Fig. 4 is a plan. Fig. 5 is a central vertical longitudinal section ofthe parts shown, taken on line :19 of Fig. 4. Fig.6 is a detail. Fig. 7is also adetail. Fig.8 is a detail showing an inside view of one of thearms or supports i.

The improvements which are herein set forth are all'adapted to be usedin connection with a water-elevator, and ..I have shown them inconnection with such an elevator, though some of them can bealso be usedwith other elevators.

The invention consists in a novel construction and combination of parts,which will be fully hereinafter described, and specifically pointed outin the claims.

In the drawings, A represents the cylinder of a water-elevator. a is thehoisting-cable. b is the safety-cable. These cables pass over pulleys cd e f. The two pulleys d f are in a frame'which is connected with thepiston, and they are supported on a track, as usual. Each end of thesafety-cable is connected, in a suitable manner, with a coil-spring soarranged that each spring will take up the cable a little or allow thesame to yield a little under strain; As shown, one end is secured to ashort movable rod located in bearings upon the top of the cylinder, thespring 9 being around the rod and between one of the bearings and a nut,pin, or enlargement 'on the rod. The devices at the other end of thesafety-cable are similar to those just described.

B is a counterweight, which is connected directly with the workingcable. As shown, this is done by means of a frame, O, which movesbetween the posts D D, in which frame the counter-weight is supported.The working cable is connected to the bottom bar and also to the top barof this frame 0, which moves with .the cable and takes the place of aporpasses through holes in the upper and lower bars of the frame C, andthe several pieces which together comprise the weight B are notched, sothat the cables do not interfere with the removal of the same, nor withplacing them in the frame.

Connected with the piston-head F is a disk, E, the connection betweenthe two being by means of sliding rods and springs, which permit thedisk to yield when it comes in contact with the flange h at the outerend of the cylinder.

3 i are two arms, connected with the inner end of the cylinder, or withsome other suitable support, between which arms the two pulleys c e arelocated. In each arm is an opening, in which is placed a brake-block, j.As shown, these brake-blocks are each secured to a spring, 70, which isfastened in a recesson the inside of the several arms 6 t in such mannerthat the springs hold the brakes j away from the pulleys c 0 when suchbrakes are not forced against the pulleys. The brake-blocks,

as shown, are on the outside, tapering .firom the center toward eachend.

G is a rod or bar hinged in suitable bearings. On this rod are two arms,I- 1, arranged so that by turning the rod G these arms will be broughtinto contact with the brakes and force them against the pulleys 0 6.These arms can operate the brakes from either end. at is another arm atthe end of the rod G.

His a pulley, around which the shifting-cable it passes. I is anotherpulley, and 0 is a cord which passes around the two pulleys H I. Thiscord is also connected to the arm m on the rod G for the purpose ofoperating the brakes through the shifting-cable. J is anotherpulley.

p is a pinion engaging with a rack, g, on or connected with the rod ofthe valve which governs the flow of water into and from the cylinder. ris a cord passing over the pulleys I J. The pinion p and pulley J are onthe same shaft. They operate the valve-rod q.

- Water is admitted into the cylinder through the pipe K N, and isdischarged through N P,

a suitable valve being provided, as usual.

The operation of the several devices is as follows: The springs y gserve the double purpose of holding the safety-cable b reasonably taut,so that it will not slip off from its pultion of the cable. As shown,the safety-cable ICC leys or from any one of them, or become too loosethereon, and also that of allowing the same to yield a little for thepurpose of relieving it from the strain of the load in case, fromanycause, such safety-cable should become too taut.

The operation of the counter-weight is the same as in other cases but bybeing connected directly with the working cable the expense of one cableis saved.

The spring-stop connected with the piston of the cylinder, as shown,relieves the jar and strain which would otherwise follow from the suddencontact of the piston-head with the flange on the outer end of thecylinder.

There is frequently a little leakage around the piston-head of awater-elevator; hence if the platform is stopped before reaching itslowest point when descending, or if brought to a stand while ascending,it will begin to descend slowly in consequence of such leakage. Thiswill be prevented by the application of the brakes, which can beoperated by means of the shifting-cable and the other described devices. The rack q, which is connected with the valve-rod, is operatedsimultaneously with the brakes. It is designed to have the brakesoperated automatically, when the platform reaches its highest and lowestpoints, by buttons on the shifting-cable, which are in common use.

Theoperation of the discharge-pipe has been sufficiently explained.

The spring g at that end of the safety-cable which is connected with theplatform could he used with elevators not operated by water.

I have shown one method of applying brakes to a water-elevator; but I donot limit myself to the de ices shown, as various modifications andchanges can be made without departing from my invention.

What I claim as new, and desire to secure by Letters Patent, is asfollows:

1. In a hydraulic elevator, the combination, with the cylinder andpiston and the pulley f, connected and moving with the latter, of thesafety-cable I), passing around the pulley and connected at its end witha spring, substantially as and for the purposes described.

2. In awatcr-elevator, the combination,with the cylinder and the piston,of a spring-stop connected to and moving with the piston, substantiallyas described.

3. In awater-elevator, the combination, with the cylinder and the pistonhaving a pistonrod extending through the cylinder and operating thehoisting mechanism, of a spring-stop within the cylinder to relieve thehoisting-platform of sudden jars,substantially as described.

4. The combination, with the shifting-cable of an elevator, of a brakemechanism connected with the same through intermediate connections andarranged to be applied to a pulley or pulleys around which pass thehoisting-rope of the elevator, substantially as described.

5. In a hydraulic elevator, the combination, with the wheels 0 and e andthe hoisting and safety cable passing around said pulleys, of a brakefor acting on the pulleys and devices connecting said brake with thevalve which controls the flow of water to the cylinder, and,

with the shifting-cable n, substantially as and for the purposedescribed.

RICHARD T. CRANE.

*Witnesses:

E. A. West, 0. W. BOND.

